[Atrix 4G General] Foka002:
I have updated this guide as I have a new replacement from t-mobile. This guide was based on my previous atrix which was running froyo (2.2.2) This time I have applied OTA 45.21.2.Mb860.T-mobile.en.gb and everything works perfect so if you have updated your phone to 2.3.4 then you can use this guide as well

I have decided to create this thread as I have seen many people confused about the difference between At&t phones and their UK ones. This thread will help you make the decision whether you want to hack your phone or not. I own T-mobile UK Atrix and whatever I have done worked perfectly for me. I’m not responsible for any bricks. You doing this on your own risk – good news is that no one (UK) had their mobile bricked. ALL CREDITS GOES TO DEVELOPERS AND OTHERS THAT CREATED SIMILAR THREATS – THANKS

ROOTING – If you running froyo (2.2.2) I have used gingerbreak method which is very easy:

1.	Download Gingerbreak.exe from here: [url]http://api.viglink.com/api/click?format=go&drKey=1359&loc=http%3A%2F%2Fxdaforums.com%2Fshowthread.php%3Ft%3D1046626&v=1&libid=1311795059566&out=http%3A%2F%2Fbandbinnovations.com%2Fxda%2FGingerBreak.exe&ref=http%3A%2F%2Fxdaforums.com%2Fforumdisplay.php%3Ff%3D997%26order%3Ddesc%26page%3D4&title=%5BHOWTO%5D%20Easy%20Root%201.5.7%20%26%201.83%20using%20GingerBreak%20-%20xda-developers&txt=http%3A%2F%2Fbandbinnovations.com%2Fxda%2FGingerBreak.exe[/url]
2.	Make sure you have got debugging mode ON(settingsApplications Development) and you have installed drivers for your atrix
3.	Run Gingerbreak.exe on your pc
4.	In your phone you will find new app called gingerbreak – run it and select root. Mobile will reboot itself once is done.
5.	Congratulation you are rooted.
NOTICE: You need to have External SD Card and also be aware that rooting this way will format your internal storage.

ROOTING – If you running gingerbread (2.3.4) use superoneclick (http://xdaforums.com/showthread.php?t=803682) and fallow the instructions on the original thread. Very easy way.

If you want to try ANY Custom ROM you need to Unlock your Bootloader:

1.	You need to download and install RDS lite on your PC: [url]http://xdaforums.com/attachment.php?attachmentid=634879&d=1308872277[/url]
2.	Download and extract IHOP_Bell.rar: [url]http://diamantephoto.com/IHOP_Bell.rar[/url]
3.	Download and extract Fastboot tools [url]http://gititbit.ch/FAST[/url]
4.	Power down your Motorola Atrix
5.	Take out your microSD card and SIM card for the flashing process
6.	While turning the phone on, hold the Volume Up button until it acknowledges RSD
7.	Your device will say “Starting RSD protocol support”
8.	Run “RSD Lite” on your computer
9.	Press the “. . .” button next to the box labeled “Filename”
10.	Load up the SBF file – IHOP_Bell.sbf
11.	Plug your device into your computer
12.	RSD Lite should recognize your device and say “Model: NS Flash Olympus” and “Connected…”
13.	Press the “Start” button
14.	Be patient while the phone reboots. It will take a long time.
15.	Open and extract the Fastboot package from above
16.	Open a command prompt window
a.	On Windows, press Start and type “cmd” then press the enter button
17.	Type the following command. Your directory will be the folder where you extracted the Fastboot package.
(Example: cd C:\Users\Kenneth\Desktop\fastboot-package)
a.	cd your directory here
18.	Power down your Atrix device
19.	Hold the power button and the downward volume button until you see “Fastboot”
20.	Let go of the buttons and press the upward volume button once
21.	You will now see “Starting Fastboot protocol support”
22.	Plug your device into a USB port in the back slot of your computer
a.	Front slots sometimes do not have enough power to stay connected to the device.
23.	Type the following command:
a.	fastboot oem unlock
24.	You will now receive a warning along with a unique device ID
25.	Type the following commands using your unique device ID in place of the ####:
a.	fastboot oem unlock ####
b.	fastboot reboot
26.	Wait for your device to reboot. Congratulations! You now have an unlocked bootloader!

I recommend to install romracer's Recovery : http://xdaforums.com/showthread.php?t=1204500.

Instalation:

$ fastboot devices
TA20700KXH fastboot

$ fastboot erase recovery
erasing 'recovery'... OKAY [ 0.741s]

$ fastboot flash recovery recovery.img
sending 'recovery' (4780 KB)... OKAY [ 0.490s]
writing 'recovery'... OKAY [ 0.544s]

The reason I recommend this recovery is because the official clockwork recovery doesn't support external sdcard (bug?). If this doesn't bother you then you can download Rom manager from market and install official recovery.

Most of the roms have unified kernel which means you don't need to apply anything after installation. This includes roms like aura, the dark side, cyanogen mod.

However if you do have issues with memory then download kernel from this thread: http://xdaforums.com/showthread.php?t=1156040